The irony that the firm is called "Palantir".
How can you be nerd enough to name your surveillance firm Palantir, and not be nerd enough to have actually read what it did in the books?
Sauron fed Denethor false information when he used Palantir to scry the kingdom he was a stuert of. Or at least, Sauron twisted what Denethor could see through Palantir, only showing him the bad stuff or things in a bad light.
Palantir was completely compromised, and it's what ended up driving Denethor mad.